Fluid valve



' Oct. 9', 1928.-

A. FRAUENHEIM FLUID VALVE Filed Oct. 15, 1927 IN VEN TOR.

J. m x u W W 41.0 1 1 C I 2E: m ,0 m fl k7 i valve. Another ob ect is to provide a com- Patented ',1928

UNITED 'sTA- as, PATENT -OFFICE.

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Application and octoberili, 1927. semi no. enema.

I. This invention relates to valvesfor fluids and more in particular to the type oi-valves knownin the trade as globe-valves.

One of the primary objects of this invention is-to provide aicomposite-valve disc composed'of a resilient disc-member placed intermediate two disc-members madeof hard, mi- 1 yielding material, preferably of metal, said disc-members bein properly'machinedto jointly fit accurate y within the seat of the osite t alve disc of the above stated type aving the shape of a spherical zone adapted to fit a correspondingly shaped seat, so that said disc may adjust itself properly within the seat. A. further object is to'provide a valve disc inwhich the most vulnerable part,

i represented by the resilient disc-member is entirely enclosedin the valve seat, when the valve is shut, whereby said disc-member is protected against corrosion or other detrimental action which ma becausedby the nature of the fluid contr ed thereby.- Still another object of thls invention is the provision of such a composite valve disc in which the sealing action of the resilient disc-member is due not solely to the'direct pressure by said constructed according to my inventlop, some parts being shown in-elevation. A

Fig. 2 1s a fragmentary sectionalview showing a modification of the-invention.

Fig. 3 is a fragmentar sectional view depicting another modifie construction. 1 c

Fig. 4 is a pers ective view of the resilient disc-member use structions shown. 1

Fig.5 is a perspective view of the follower used m a valve built according to 1 or 2.

Reference being had to the drawing, a valve built in accord with my-invention'foh lowsin its outward appearance the usual construction used for globe-valves and'con- Y sists of a body 1 having inlet andoutletcon- .nctions 2 3 and aninteriorly' threaded The latter serves as-a support and the valve-stem 6 and comprises the ase port1on '4', the neck 8 and thestufling-box 9. The

e two component rigid in either one of the con-- prefer to make them dished, as

neck 4- to which is screwed the valve bonnet 5.

ide for base' has a hub 10 which is centrally threaded to-accommodatethe threads 11 of thevalvestem, whereas the stufiing box- 9 is of usual design and consists of the screwed on cap 12 vand the gland 13, which presses upon the packing-material 15 placed around the smooth part of the valve-stem in a suitable recess 16 provided in the top of the bonnet. The valve-ste is surmountedwith any desired' and suit such as the hand-wheel;17.'

le type of operating means,

The. control of the fluid assing through the valve-body 1 is effected y means of a new type of composite valve-disc, the construction of which forms the subject matterof this application. 1

- In the construction shown in'Fig. 1 in particular, the valve-disc used therein consists of an annular gasket 18. ade of resilient material, such as rubber of a composition suited to the-nature and working pressure of the fluid controlled. This gasket is placed between a stationary disc 19, which in this "example is formed integrally with the valve stem, and the follower-disc'20. -Upon' its underside the stationar disc has an extension, or core, 21 which ts closely within the Y central aperture 22 of the gasket, and which also acts asa guide forthe follower b engaging the recess 23 disposed centrally t ere in. The component parts of this composite valve-disc are held together by means of a screw 24 having an enlar ed shank portion 25 to limit .the amount-t e screw may be screwed in. and thereby the ori inal pressure of the follower on the asket.

a v a I hlS composite valve-disc is shaped li e a spherical; zone and v seat {26, the lower portion of the follower serving as a seal for the port aperture 27.

1 The so-called flat sides of the gasket 18 may be made level, if desired,'b1lt in .practice I various figures,- so that the sgasket will be thickestatthe' spherically: aped periphcry. The faces of the stationa I fits within a correspondingly shaped valve 7 shown in the disc19 and ofthe follower-disc 20 contact1ngwith the 1 gasket are,-of-' course, suitably beveled to fit within the dished'gasketr The advantage of this-construction is that when the valve-disc is forced on its seat, the sealing action of the 8 5 9 (he to thej ert al press'urewill be 1ncreased by the wedge-efiect of the beveled disc-members, which efi'ects tends to squeeze the material of the gasket outwardly against the seat, as will be readily understood. If det sired, the rigid disc 19'may be provided with a collar 27 which not only strengthens the inwardly threaded circular recess {50 in which 2" an annular nut 31 is screwed. ThlS construction, of course, permits of slight axial adj ustments of the disc and of the rotation of the valve-stem without rotating the composite valve-disc, when the latter is seated, thus eliminating the wear of said valve-disc and the seat therefor due to improper seating or grinding. The three component discs of thevalve-disc are held together by a nut 32 which is applied to a suitably threaded extension 33 formed integrally with the upper disc-member and depending from the core 34 thereof. In Fig. 3 the sealing'action of the gasket 18 is not obtained by forcing down the valvestern, but depends entirely on the hydrostatic 3 pressure exerted by the controlled fluid. In

this construction the follower disc 35 is located above the gasket 18 and is held in place by a flanged nut 36 which engages the thread ed portion 37 of the valve-stem 38. ,Thelat- 401 'ter is extended downward toproduce the core 39 andthe spherically turnedrhead 40 which forms the lower and stationary vdisc element of the composite valve-disc. The 'lat- I terhas, as in the other constructions, the shape of a spherical zone. As .will .be-noted, the harder thevalve-stem is screwed down, the greater will be the pressureof the lower disc-member 40 on the valve -seat. It will also be seen that the nut 36, once adjusted, prevents'upwai'd movement of the follower disc 35 and that the latter bears down '11 the gaskets under the influence ofthe fluid pressure so that,-the greater said'pressure the greater will also be the sealing actionof the gasket on the seat.

A valve built along' the lines assent T fers a grgat seating areafor the valve disc, thus .greatlvprolonging the useful life of the latter. Moreover, it will be observed 110 that the resilient gasket 18, which is usually more sub r to wear or disintegration than themet parts of the valve, forms only a *fractional part of the thickness of the valvediscamd is at all'times well protected within the seat; valve is closed. Another resence advantage of this construction lies in the fact that. said gasket never comes 1n contact with the relatively sharp edges of the valve seat, thus, any cutting of the gasket is prevented.

Because of its protected position, the gasket will last considerably longer than gaskets of similar material exposed to the fluid when the valve is shut. Moreover, a considerable pressure imposed upon the gas et will simply compact the material thereof and reduce somewhat its thickness, but the active periphcry of the gasket will always remain in proper sealin condition. Furthermore, the hardening of the gasket, through compacting, will never exceed thehardness of the other metallic parts-of the valve; hence, the gasketwill always yield sufiiciently to produce a satisfactory seal, even though the metallic discs and the seat should become badly worn through extensive use or chemical actions.

-As will be apparent to those versed in the art,

a worn gasket may easilybe replaced by a new one, by simply unscrewing the screw or nutholding the component parts of the valvedisc together.

Although 'n the drawing I have shown ap- I plications of the spherical composite valve disc to straight globe-valves, it is evident.

that this type of disc can be used advantageously on angle body,valves, check valves and other types of valves in which ordinary valve-discs have been used heretofore.

While the. illustrated examples constitute practical embodiments of my invention, I

do not wish to limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be varied without de arting from the scope of the invention, as

ed in the appended claims.

I claim: u

' 1. In a valve of the character described, a composite valve-disc having the shape of a spherical zone and a spherically shaped seat therefor, said composite disc comprising two rigid disc-members and an intermediate resilient disc-member, each ada ted for scaling engagementwith said seat w en'the valve is shut.

2; In a valve of the character described, a

composite valve-disc having the shape of a spherical zone and a spherically shaped seat therefor, said composite disc comprising two ri 'd' disc-members and an'intermediate resilient disc-member severally adapted for sealing engagementwith the "seat when the valve is shut; and guide-means for holding the disc-members in proper alignment.

3. In a valveof'the character described, a composite valvedisc having the shape of a spherical zone and a spherically shaped seat therefor, said composite, disc comprising two rigid disc-members and an inter-mediatorssilient disc-member severally adapted for I sealing engagement-with the seat when the -spherical zone and a spherically shaped seat therefor,-said composite disc comprising two ri 'd disc-members and an intermediate res' 'ent disc-member severally adapted for sealing engagement with the seat when the valve 1s shut, and means for compressing the resilient disc-member between said rigid disc-members.

' 5. In a valve of the character described, a composite valve-disc having the shape of a s herical zone and a spherically shaped seat t erefor, said composite disc comprising two rigid disc-members and an intermediate resilient disc-member severally adapted for sealing engagement with the seat when the valve 1s shut, and adjustable means for compressing the resilient disc-member between said rigid disc-members.

6. In a valve of the character described, a composite valve-disc having-the shape of a spherical zone and a spherically shaped seat therefor, said composite disc comprising two ri 'd disc-members and an intermediate resihent disc-member severally adapted for sealing engagement with the seat when the valve is shut, and unitary means for holding said disc-members together and compressing said resilient disc-member.

7. In a valve of the character described, a composite valve-disc having the shape of a spherical zone and a spherically shaped seat therefor, said composite disc comprislng two ri 'd disc-members and an intermediate resi ient disc-member-havin dished sides in contact with the rigid disc-members, each disc-member being adapted for sealin engagement with said seat when the va ve is shut. a

8. In a valve of the character described, a composite valve-disc having the shape of a s herical zone and a-spherically shaped seat t erefor, saidcompos'ite disc comprising two rigid disc-members and an intermediate resilient disc-member severally adapted for sealing engagement with said seat when the valve is shut, one of the rigid disc-members bein movable along the axis of the other rigl disc-member, and means for holding 'sa1d disc-members in proper alignment.

In testimony whereof I aifix my signature.

ALoYsIUs M. FRAUENHEIM. 

